C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/037 (2006.01)
Patent
CA 2227693
Method and apparatus for refining metallurgical grade silicon to carry out deboronization rapidly in production of silicon for solar cells, by blowing a mixed gas of water vapor and inert gas on a surface of molten silicon, and wherein a reducing gas is further applied to the molten metal surface, and including the further step of controlling mix ratios of water vapor and reducing gas, the angle of blowing of the gas, and the deboronization parameters.
Méthode et dispositif d'affinage du silicium de qualité métallurgique pour éliminer rapidement le bore lors de la fabrication du silicium destiné aux piles solaires. La méthode et le dispositif permettent de souffler un mélange gazeux de vapeur d'eau et de gaz inerte sur une surface de silicium en fusion; d'appliquer un gaz réducteur sur la surface du métal en fusion, et lors d'une étape supplémentaire de régler les rapports de mélange de la vapeur d'eau et du gaz réducteur, l'angle de soufflage du gaz, et les paramètres d'élimination du bore.
Abe Masamichi
Aratani Fukuo
Baba Hiroyuki
Hanazawa Kazuhiro
Kato Yoshiei
Kawasaki Steel Corporation
Moffat & Co.
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